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Numerical Modelling of Historical Landslide-generated Tsunamis in the French Lesser Antilles : Volume 10, Issue 6 (17/06/2010)

By Poisson, B.

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Book Id: WPLBN0003972529
Format Type: PDF Article :
File Size: Pages 12
Reproduction Date: 2015

Title: Numerical Modelling of Historical Landslide-generated Tsunamis in the French Lesser Antilles : Volume 10, Issue 6 (17/06/2010)  
Author: Poisson, B.
Volume: Vol. 10, Issue 6
Language: English
Subject: Science, Natural, Hazards
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2010
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

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Poisson, B., & Pedreros, R. (2010). Numerical Modelling of Historical Landslide-generated Tsunamis in the French Lesser Antilles : Volume 10, Issue 6 (17/06/2010). Retrieved from http://worldpubliclibrary.org/


Description
Description: BRGM – Land Use Planning and Natural Hazards, 3 avenue Claude Guillemin, BP 36009, 45060 Orléans Cedex 2, France. Two historical landslide-induced tsunamis that reached the coasts of the French Lesser Antilles are studied. First, the Martinique coast was hit by a tsunami down the western flank of Montagne Pelée at the beginning of the big eruption of May 1902. More recently, the northeastern coast of Guadeloupe was affected by a tsunami that had been generated around Montserrat by pyroclastic flows entering the sea, during the July 2003 eruption of the Soufrière Hills volcano. We use a modified version of the GEOWAVE model to compute numerical simulations of both events. Two source hypotheses are considered for each tsunami. The comparison of the simulation results with reported tsunami height data helps to discriminate between the tested source decriptions. In the Martinique case, we obtain a better fit to data when considering three successive lahars entering the sea, as a simplified single source leads to an overstimation of the tsunami wave heights at the coast. In the Montserrat case, the best model uses a unique source which volume corresponds to published data concerning the peak volume flow. These findings emphasize the importance of an accurate description of the relevant volume as well as the timing sequence of the source event in landslide-generated tsunami modelling. They also show that considering far-field effects in addition to near-field effects may significantly improve tsunami modelling.

Summary
Numerical modelling of historical landslide-generated tsunamis in the French Lesser Antilles

Excerpt
Berté, E.: Les éruptions de la Montagne Pelée – Récit et observations d'un témoin, La Géographie, VI, 133–141, 1902 (in French).; Bourdier, J. L., Boudon, G., and Gourgaud, A.: Stratigraphy of the 1902 and 1929 nuée-ardente deposits, Mt. Pelée, Martinique, J. Volcanol. Geoth. Res., 38, 77–96, 1989.; Carey, S., Sigurdsson, H., Mandeville, C., and Bronto, S.: Pyroclastic flows and surges over water: an example from the 1883 Krakatau eruption, B. Volcanol., 57, 493–511, 1996.; Chen, Q., Kirby, J. T., Dalrymple, R. A., Kennedy, A. B., and Chawla, A.: Boussinesq modeling of wave transformation, breaking, and inundation. II, J. Waterw. Port C. Div.-ASCE, 126, 48–56, 2000.; Chrétien, S. and Brousse, R.: La Montagne Pelée se réveille, Comment se prépare une éruption cataclysmique, Paris, 1988 (in French).; Chrétien, S. and Brousse, R.: Events preceding the great eruption of 8 May, 1902 at Mount Pelee, Martinique; Mount Pelee, J. Volcanol. Geoth. Res., 38, 67–75, 1989.; Cole, P. D., Calder, E. S., Druitt, T. H., Hoblitt, R., Robertson, R., Sparks, R. S. J., and Young, S. R.: Pyroclastic Flows Generated by Gravitational Instability of the 1996–97 Lava Dome of Soufriere Hills Volcano, Montserrat, Geophys. Res. Lett., 25, 3425–3428, 1998.; Deplus, C., Le Friant, A., Boudon, G., Komorowski, J. C., Villemant, B., Harford, C., Ségoufin, J., and Cheminée, J. L.: Submarine evidence for large-scale debris avalanches in the Lesser Antilles Arc, Earth Planet. Sc. Lett., 192, 145–157, 2001.; Edmonds, M. and Herd, R. A.: Inland-directed base surge generated by the explosive interaction of pyroclastic flows and seawater at Soufrière Hills volcano, Montserrat, Geology, 33, 245–248, 2005.; Edmonds, M., Herd, R. A., and Strutt, M. H.: Tephra deposits associated with a large lava dome collapse, Soufriere Hills Volcano, Montserrat, 12–15 July 2003, J. Volcanol. Geoth. Res., 153, 313–330, 2006.; Fritz, H. M., Hager, W. H., and Minor, H. E.: Lituya Bay case: Rockslide impact and wave run-up, Science of Tsunami Hazards, 19, 3–22, 2001.; Fritz, H. M., Hager, W. H., and Minor, H. E.: Near field characteristics of landslide generated impulse waves, J. Waterw. Port C. Div.-ASCE, 130, 287–302, 2004.; Hart, K., Carey, S., Sigurdsson, H., Sparks, R. S. J., and Robertson, R. E. A.: Discharge of pyroclastic flows into the sea during the 1996–1998 eruptions of the Soufrière Hills volcano, Montserrat, B. Volcanol., 66, 599–614, 2004.; Heinrich, P., Mangeney, A., Guibourg, S., Roche, R., Boudon, G., and Cheminee, J.-L.: Simulation of water waves generated by a potential debris avalanche in Montserrat, Lesser Antilles; The Soufriere Hills eruption, Montserrat, British West Indies; introduction to special section; Part 2, Geophys. Res. Lett., 25(19), 3697�-3700, doi:10.1029/98GL01407, 1998.; Herd, R. A., Edmonds, M., and Bass, V. A.: Catastrophic lava dome failure at Soufriere Hills Volcano, Montserrat, 12–13 July 2003, J. Volcanol. Geoth. Res., 148, 234–252, 2005.; Kennedy, A. B., Chen, Q., Kirby, J. T., and Dalrymple, R. A.: Boussinesq modeling of wave transformation, breaking, and inundation. I, J. Waterw. Port C. Div.-ASCE, 126, 39–47, 2000.; Kirby, J. T., Wei, G., Chen, Q., Kennedy, A. B., and Dalrymple, R. A.: FUNWAVE 1.0. Fully nonlinear Boussinesq wave model, Documentation and user's manual, Tech. Rep. CACR-98-06, Center for Applied Coastal Research, Department of Civil and Environment Engineering, University of Delaware, 1998.; Lacroix, A.: La Montagne Pelée et ses éruptions, Paris, 1904 (in French).; Latter, J. H.: Tsunamis of volcanic origin: Summary of causes, with particular reference to Krakatoa, 1883, B. Volcan

 

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